Merge branch 'marka_pipeline_float' into 'master'

Use memcpy to copy floats for vertex input

The destination buffer may not be aligned as required to
cast as a float* or deFloat16*. This was causing crashes
due to bus errors on 32-bit ARM systems in several of the
dEQP-VK.pipeline.vertex_input.multiple_attributes.* tests.

See merge request !333

diff --cc external/vulkancts/modules/vulkan/pipeline/vktPipelineVertexInputTests.cpp
Simple merge